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---Did you lock the door? ---No, I , but I forgot. A. should B. must have C. mus

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---Did you lock the door? ---No, I , but I forgot. A. should B. must have C. mus

---Did you lock the door?
---No, I ____, but I forgot.
A. should        B. must  have        C. must          D. should  have

 

试题答案

D